Legal status · United States
Is Ghrelin legal in the United States?
Written by Aaron CuhaReviewed Sep 2026
Direct answer
No. Ghrelin is not an approved medicine in the United States. Its legal category is "Not a medicine; endogenous signalling molecule". Nothing that contains it is allowed for any use in people. Vials labeled "for research use only" get no exception: that label does not make them legal to use in people. On the evidence, 2 completed human trials are cited on its profile.
- People given it
- 27
- Found nothing
- 0
Legal category
Not a medicine; endogenous signalling molecule
Ghrelin is not sold or prescribed. Macimorelin, a drug that switches on its receptor, was FDA-approved as a test for growth hormone deficiency in adults, not as a treatment. The FDA's openFDA database lists the product as discontinued.
Reviewed Sep 2026. This is a legal category, not legal advice.
A "research use only" label on a vial does not make it legal to use on people.
Ghrelin in the United States at a glance
| Legal category | Not a medicine; endogenous signalling molecule |
|---|---|
| Note | Ghrelin is not sold or prescribed. Macimorelin, a drug that switches on its receptor, was FDA-approved as a test for growth hormone deficiency in adults, not as a treatment. The FDA's openFDA database lists the product as discontinued. |
| FDA approval status | The hormone itself is not a medicine. No drug that switches on the ghrelin receptor is approved to boost appetite. The one approved drug that works this way is macimorelin (Macrilen, NDA 205598). It is a pill approved as a test for growth hormone deficiency, not as a treatment. The FDA's openFDA database now lists that product as discontinued. |
| Studies in people | 2 of 5 sources on the profile |
| Reviewed | Sep 2026 |
The legal category and note come from the Ghrelin profile. We checked them against U.S. Food and Drug Administration (FDA) listings on the reviewed date.
What this means
- 01
No product containing Ghrelin is approved by FDA for any use in the United States. So nothing on sale is allowed for use in people.
- 02
"Research use only" is a label sellers put on. It is not a legal category that allows use in people, and it does not get a product out of medicines law.
- 03
Importing it, supplying it or promoting it for use in people can fall under medicines law in the United States. This page is general information, not legal advice.
What Ghrelin is
The body's own hunger hormone. It is also the natural trigger for growth hormone, and every growth hormone peptide copies it.
Ghrelin is a hormone made mostly in your stomach. It is 28 building blocks long and was found in 1999.
How it works: It switches on the ghrelin receptor in the pituitary gland and the brain. That releases growth hormone and makes you hungry.
Approval history: The hormone itself is not a medicine. No drug that switches on the ghrelin receptor is approved to boost appetite. The one approved drug that works this way is macimorelin (Macrilen, NDA 205598). It is a pill approved as a test for growth hormone deficiency, not as a treatment. The FDA's openFDA database now lists that product as discontinued.
How FDA treats this kind of product
Approves prescription drugs, each for a named use. It also acts against unapproved products, including peptides sold online. Compounding pharmacies, which mix drugs to order, may make some compounds with a prescription. That only applies when the FDA puts the compound in a category of bulk ingredients it allows.
The legal category above is how The Longevity Archive reads U.S. Food and Drug Administration listings for Ghrelin on the reviewed date. It is not a legal opinion. Rules change. Bringing a compound into the country, prescribing it and owning it can each be treated differently. Check with the agency before you act on anything here.
Ghrelin in sport and the military
Whether Ghrelin is banned in sport is set by the World Anti-Doping Code and by military rules, not by its legal status in the United States. Before you compete or get tested, look up Ghrelin by name on the Prohibited List, or look up a named product in Global DRO. Under the World Anti-Doping Code, category S0 bans, at all times, any drug-like substance that meets two tests. No other section of the List covers it. And no government health regulator anywhere has a current approval for it as a treatment in people. Many substances that are approved somewhere are banned by name in another section. So approval does not mean a substance is allowed in sport.
- WADA Prohibited List
- Global DRO (check a named product)
- USADA (US athletes)
- Operation Supplement Safety (US service members)
The rules you compete or serve under decide this, not this page.
Ghrelin in other countries
United Kingdom
Not approvedNot a medicine; endogenous signalling molecule
Is Ghrelin legal in the United Kingdom?Australia
Not approvedNot a medicine; endogenous signalling molecule
Is Ghrelin legal in Australia?Canada
Not approvedNot a medicine; endogenous signalling molecule
Is Ghrelin legal in Canada?Frequently asked questions
Is Ghrelin legal in the United States?
No. Ghrelin is not an approved medicine in the United States. Its legal category is "Not a medicine; endogenous signalling molecule". Nothing that contains it is allowed for any use in people. Vials labeled "for research use only" get no exception: that label does not make them legal to use in people. On the evidence, 2 completed human trials are cited on its profile. Note: Ghrelin is not sold or prescribed. Macimorelin, a drug that switches on its receptor, was FDA-approved as a test for growth hormone deficiency in adults, not as a treatment. The FDA's openFDA database lists the product as discontinued.
Can I buy Ghrelin in the United States?
There is no approved product to buy. In the United States, Ghrelin has the legal category "Not a medicine; endogenous signalling molecule". So no licensed pharmacy product exists. Sellers who list it "for research use only" are not selling it for use in people, and that label does not change its legal status. Sellers named on the price pages are ranked by certificate tier, then price, and any affiliate income is disclosed there. Naming a seller is not a recommendation to buy or use anything. Note: Ghrelin is not sold or prescribed. Macimorelin, a drug that switches on its receptor, was FDA-approved as a test for growth hormone deficiency in adults, not as a treatment. The FDA's openFDA database lists the product as discontinued.
Is Ghrelin FDA approved?
No. FDA status: The hormone itself is not a medicine. No drug that switches on the ghrelin receptor is approved to boost appetite. The one approved drug that works this way is macimorelin (Macrilen, NDA 205598). It is a pill approved as a test for growth hormone deficiency, not as a treatment. The FDA's openFDA database now lists that product as discontinued.. Current US legal category: "Not a medicine; endogenous signalling molecule". On the evidence, 2 completed human trials are cited on its profile.
Related compounds in the United States
Full research profile
How Ghrelin works, the studies we cite, FDA status and the full legal summary are all on its compound profile.
Ghrelin profileThis page is general information about the legal status of Ghrelin in the United States, current as of Sep 2026. It is not legal advice. Legal status changes. For your own situation, check with U.S. Food and Drug Administration or ask a lawyer. Educational use only. This database summarizes published research and is not medical advice. Where a dose appears it is a record of what a trial or clinic ran, or what people describe doing, with its source attached. Nothing here is a recommendation for personal use. Sellers named on the price pages are ranked by certificate tier, then price, and any affiliate income is disclosed there. Naming a seller is not a recommendation to buy or use anything.